Use of bottom bearing changed the critical rotation rate,and the vibration occurred in the test run of dimethoate reactor was solved.The requirement of production was,then,reached.

• 通过增加底轴承来改变搅拌轴的临界转速,解决了乐果合成釜试车过程中震动较大的问题,达到了生产和工艺要求。